package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class CategoryServiceImpl implements CategoryService {
    @Autowired
    private CategoryMapper categoryMapper;

    /**
     *  新增分类
     * @param categoryDTO
     */
    @Override
    public void save(CategoryDTO categoryDTO) {

        Category category = new Category();
        //对象属性拷贝，前提属性名一致,把前面的复制给后面的
        BeanUtils.copyProperties(categoryDTO,category);
        //设置账号的状态，默认正常状态2表示套餐分类，1表示菜品分类
        category.setType(StatusConstant.ENABLE);

        category.setCreateTime(LocalDateTime.now());
        category.setUpdateTime(LocalDateTime.now());



        //设置当前记录的创始人和修改人id
        category.setUpdateUser(BaseContext.getCurrentId());
        category.setCreateUser(BaseContext.getCurrentId());
        categoryMapper.insert(category);

    }

    /**
     * 分页查询
     * @param categoryPageQueryDTO
     * @return
     */
    @Override
    public PageResult pageQuery(CategoryPageQueryDTO categoryPageQueryDTO) {
     //开始分页查询
        PageHelper.startPage(categoryPageQueryDTO.getPage(),categoryPageQueryDTO.getPageSize());
       Page<Category> page= categoryMapper.pageQuery(categoryPageQueryDTO);
        long total = page.getTotal();
        List<Category> records = page.getResult();

        return  new PageResult(total,records);
    }

    /**
     *
     * TODO 根据id删除菜品
     * @param id
     * @return
     */
    @Override
    public void getCategoryById(Long id) {

        //查询当前分类是否关联了菜品，如果关凯你看就提出业务异常

       Integer count =categoryMapper.deleteById(id);

       if(count >0){
           //当前分类下由菜品，不能说剩余

           throw  new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);

       }
       //查询当前分类是否关联了套餐，如果关联了就抛出业务异常
//        count= SetmealMapper.countByCategoryId(id);
       if (count>0) {
           throw  new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);
       }
       //删除分类查询
        categoryMapper.deleteById(id);






    }

    /**
     * 修改分类
     * @param categoryDTO
     */
    @Override
    public void update(CategoryDTO categoryDTO) {
        Category category = new Category();
        //属性拷贝
        BeanUtils.copyProperties(categoryDTO,category);

        category.setUpdateTime(LocalDateTime.now());
        category.setCreateTime(LocalDateTime.now());

        category.setCreateUser(BaseContext.getCurrentId());
        category.setUpdateUser(BaseContext.getCurrentId());

        category.setStatus(StatusConstant.ENABLE);

        categoryMapper.update(category);


    }

    /**
     * 更新状态
     * @param status
     * @param id
     */
    @Override
    public void update1(Integer status, Long id) {
        Category build = Category.builder().status(status).id(id).build();
        categoryMapper.update1(build);

    }

    /**
     * 根据类型查询分类
     * @param type
     * @return
     */
    @Override
    public List<Category> selectType(Integer type) {

       List<Category> list=  categoryMapper.selectType(type);
       return list;
    }


}
